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Large Hadron Collider restarts after two-year refit

The "Big Bang" Large Hadron Collider has been restarted after a two-year refit, scientists at Cern have said.

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Large Hadron Collider's detectors showered with particles

A visual representation of a Large Hadron Collider splash event has been tweeted by CERN's CMS Experiment team.

According to CERN, a splash event occurs when "shutters used to absorb particles that go off-axis, can be put in the path of the beam...Doing this when (the) beam is circulating essentially turns the LHC into a fixed-target experiment, showering the detectors with particles."

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